Historical clue formulations

• "A Promised Land" author, 2020 — 2026-03-25
• Only president not born in the continental U.S. — 2025-09-25
• Winner of 2008 and 2012 — 2025-09-08
• With 45-Across, presidential period from 2009-17 — 2024-04-30
• Election victor of 2008 and 2012 — 2023-10-23
• Who said "Issues are never simple. One thing I'm proud of is that very rarely will you hear me simplify the issues" — 2023-10-13
• "Thanks, ___" (catchphrase of the 2010s) — 2023-06-24
• "Yes we can" sloganeer of 2008 — 2023-05-09
• With 23-Across, period that began in January 2009 — 2023-04-18
• Subject of a Kehinde Wiley portrait in the National Portrait Gallery — 2023-04-01
• "A Promised Land" author, 2020 — 2023-03-15
• With Springsteen, co-host of the podcast "Renegades: Born in the USA" — 2023-03-01
• Who nominated Sotomayor and Kagan to the Supreme Court — 2022-07-13
• "A Promised Land" author, 2020 — 2022-03-31
• Barack, Michelle, Sasha or Malia — 2022-03-28
• 2010s White House family name — 2022-01-31
• Michelle with the best-selling memoir "Becoming" — 2021-11-29
• Politician with the campaign slogan 30-Across — 2021-08-29
• "A Promised Land" memoirist — 2020-12-30
• See 1-Down — 2020-11-24
• U.S. president who was once president of the Harvard Law Review — 2020-11-23
• #44 — 2020-07-26
• Michelle who wrote "Becoming" — 2020-07-06
• Two-time Time magazine Person of the Year — 2020-02-20
• Michelle who wrote "Becoming" — 2020-02-04
• Time's Person of the Year for 2008 and 2012 — 2019-09-18
• 2009 Nobel laureate — 2019-09-05
• Author of the 2018 best seller "Becoming" — 2019-05-26
• President with the same first and last name as his father — 2019-04-25
• Michelle with the 2018 hit memoir "Becoming" — 2019-04-01
• 2009 Peace Nobelist — 2018-08-15
• President elected with the slogan "Yes we can" — 2018-08-06
• U.S. president with the most southerly birthplace — 2018-06-20
• "44" — 2018-06-12
• Winner of two Grammys and a Nobel Peace Prize — 2018-05-25
• Appointer of Sotomayor and Kagan to the Supreme Court — 2017-12-26
• He said "What Washington needs is adult supervision" — 2017-08-30
• President whose initials were also his dog's name — 2017-08-03
• President who won the 2009 Nobel Peace Prize — 2017-03-20
• Only president born outside the continental United States — 2017-02-20
• Noted 1983 graduate of Columbia — 2016-11-18
• President who ended "don't ask, don't tell" — 2016-10-04
• Michelle in the White House — 2016-01-12
• Only U.S. president whose surname is more than 50% vowels — 2015-09-28
• President born Aug. 4, 1961 — 2015-08-03
• Lead-in to care since 2009 — 2015-07-27
• "No drama" president — 2015-07-08
• Fourth U.S. president to win a Nobel Peace Prize — 2015-05-27
• First president born outside the continental U.S. — 2014-09-08
• 2009 Peace Nobelist — 2014-07-09